CN1390620A - Air filters for purification - Google Patents

Air filters for purification Download PDF

Info

Publication number
CN1390620A
CN1390620A CN02121914.1A CN02121914A CN1390620A CN 1390620 A CN1390620 A CN 1390620A CN 02121914 A CN02121914 A CN 02121914A CN 1390620 A CN1390620 A CN 1390620A
Authority
CN
China
Prior art keywords
pottery
crb
air cleaning
cleaning filter
filter according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN02121914.1A
Other languages
Chinese (zh)
Inventor
堀切川一男
秋山元治
吉村典之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Minebea Co Ltd
Original Assignee
Minebea Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minebea Co Ltd filed Critical Minebea Co Ltd
Publication of CN1390620A publication Critical patent/CN1390620A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2055—Carbonaceous material
    • B01D39/2058—Carbonaceous material the material being particulate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2055—Carbonaceous material
    • B01D39/2058—Carbonaceous material the material being particulate
    • B01D39/2062—Bonded, e.g. activated carbon blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2055—Carbonaceous material
    • B01D39/2065—Carbonaceous material the material being fibrous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2068—Other inorganic materials, e.g. ceramics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0001—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0407—Additives and treatments of the filtering material comprising particulate additives, e.g. adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/0618—Non-woven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1208—Porosity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1216—Pore size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1241—Particle diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48—Sorbents characterised by the starting material used for their preparation
    • B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
    • B01J2220/485—Plants or land vegetals, e.g. cereals, wheat, corn, rice, sphagnum, peat moss
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/35—Respirators and register filters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Ceramic Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Filtering Materials (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Ceramic Products (AREA)

Abstract

There is provided an air cleaning filter capable of molding into free shapes in which an RB ceramics and/or CRB ceramics of 10 to 2,000 angstrom in pore diameter and 0.1 to 1.1 cm3/g in pore volume is used as an absorbing and filtering material.

Description

Air cleaning filter
Technical field
The present invention relates to a kind of air cleaning filter, relate to a kind of air-conditioning of use in family or the factory or air cleaning filter on the air purifier of being used for specifically.
Background technology
The active carbon material that air cleaning filter in the past is commonly used has cocoanut shell activated carbon equigranular activated carbon, pitch class, phenolic, polypropylene nitrile or cellulose isoreactivity carbon fiber.
Above-mentioned active carbon material all in pelletized form or fibrous therefore must be by means of carriers such as adhesive-bonded fabric or felts if will be applied to filter, or fibrage is become specific shape.For example, the spy opens and has introduced granular activated charcoal on the flat 7-136502 communique or diameter is that 10～100 dusts, pore volume are 0.25～1.1cm 3The purposes of the fibrous activated carbon of/g.
Summary of the invention
The object of the present invention is to provide a kind ofly, directly be processed into the air cleaning filter of required form by material with carbon element RB pottery with plastic performance and CRB pottery.Found also that in addition RB pottery or CRB ceramic powders are equally applicable to air cleaning filter.
Air cleaning filter among the present invention with the RB pottery or/and CRB pottery as adsorbing and filter medium, this RB pottery is or/and the pore diameter of CRB pottery is 10～2000 dusts, pore volume is 0.1～1.1cm 3/ g.The invention still further relates to the dust cover of using this air cleaning filter in addition.
Brief description of drawings Fig. 1 a is the bigger pore key diagram of CRB pottery.The CRB pottery pore key diagram of Fig. 1 b for causing by rice bran.The CRB pottery pore key diagram of Fig. 1 c for causing by polymer molecular chain.Fig. 2 is the oblique view of tabular air cleaning filter of the present invention.Fig. 3 is the oblique view of cylindric air cleaning filter of the present invention.The formed body of the formed body 3. cylindric air cleaning filters of formed body 2. other tabular air cleaning filters of symbol description 1. tabular air cleaning filters
The specific embodiment of invention
The primary raw material of RB pottery or CRB ceramic material is the defatted rice bran that is processed from strand by rice bran among preparation the present invention, and another raw material that is used therewith is a thermosetting resin.At the rice bran of 900,000 tons of the annual outputs of Japan, whole world rice bran year quantum of output then up to 3,300 ten thousand tons.First inventor's hole of the present invention is cut river one man and once the method for preparing porous carbon material with rice bran was carried out research (please refer to functional material in May, 1997 Vol.17No.5 p24-28).Introduced the defatted rice bran that will be extracted by rice bran and thermosetting resin and mix and carry out mixing back extrusion forming in the document, formed body burns till under inert gas conditions and material with carbon element (being called the RB pottery) of obtaining and preparation method thereof after drying.When preparing above-mentioned defatted rice bran, need not select the rice of certain species for use, import or home made article all can.
In addition, as long as possess the character of heat cure, any thermosetting resin all is suitable for, and commonly used have phenolic resins, diallyl phthalate resin, unsaturated polyester resin, epoxy resin, cyanate resin, polyimide resin etc., wherein preferred phenolic resins.
In the scope that does not break away from purport of the present invention, also can be simultaneously with thermoplastic resins such as polyamide.
The mixed proportion of defatted rice bran and thermosetting resin is 50～90: 50～10 weight ratios, preferred 70～80: 30～20 weight ratios.
When adopting said method, the extrusion forming body with in inert gas, burn till again after the product of finishing compare, the contraction ratio of its size is up to 25%, so is difficult to produce accurate in size product.Developed modified ceramic (being called the CRB pottery) again at this problem inventor.
The CRB pottery of indication is meant above-mentioned RB pottery is carried out the product that the back gained is handled in modification among the present invention, concrete preparation method is as follows: mix defatted rice bran and the thermosetting resin that extracts by rice bran and carry out mixing, again in 700～1000 ℃ inert gas through being ground into the carbonized powder below 60 orders behind the once-firing.Mix this carbonized powder and thermosetting resin and carry out mixingly, under the pressure condition of 20～30Mp, make it extrusion forming, can obtain the CRB pottery after again its formed body being heat-treated in 500～1100 ℃ of inert gases.
The CRB pottery is a porous material, has countless a plurality of pores.Pore on the CRB pottery can be divided into following 3 kinds according to its forming process:
First kind as shown in Figure 1a, behind the CRB ceramic particle overlaid, can form the bigger pore of aperture greater than 5 μ m between each particulate, and the peak value of this type of pore is about 15 μ m.
Second kind shown in Fig. 1 b, the aperture that is formed by the fibrous structure of rice bran itself is less than the pore of 5 μ m, the peak value of this type of pore is about 1.8 μ m.
The third is shown in Fig. 1 c, and high molecular polymer (phenolic resins) can form the little pore of aperture less than 0.2 μ m between strand and strand when high temperature cabonization.The peak value of this type of pore is about 0.05 μ m.
More than three kinds of pores can filter the particulate of corresponding size respectively, play the effect of filter.
With RB ceramic phase ratio, CRB pottery biggest advantage is exactly formed body and finishes the product dimensional contraction than being reduced to below 3% by 25% of RB pottery.The general character of CRB pottery and RB pottery is as follows.The hardness height.The coefficient of expansion is very little.Histological structure has porous.Has electric conductivity.Bulk Specific Gravity is small and light.Anti-wear performance is good.Be easy to machine-shaping.Can be processed into powder.Owing to is raw material, therefore can reduces earth environment and pollute, and be beneficial to and economize on resources with the rice bran.
Among the present invention by the RB pottery or/and CRB pottery directly during the preparation air cleaning filter, in order to obtain accurate in size formed body, use CRB pottery is advisable.But this also is not equal to the embodiment of getting rid of use RB pottery.Because make formed body with bigger mould earlier, and then, also can obtain the product of required size through after the secondary operations such as cutting.
The RB pottery is or/and the outstanding advantage of CRB pottery is to control its porous basically by changing firing condition.It has been generally acknowledged that treatment temperature is high more, porous is good more.
In the present invention by the RB pottery or/and CRB pottery when directly preparing the air cleaning filter formed body, the pore diameter that forms in its formed body can reach 10～2000 dusts, pore volume is 0.1～1.1cm 3/ g.
If use ceramic powders in the present invention, no matter then be that RB pottery or CRB ceramic powders can both meet the demands.The big I of powder is selected according to purpose, is powder about 0.1～500 μ m with average grain diameter usually.
Or/and the CRB pottery, porous is very important characteristic to the RB pottery among the present invention, and its major influence factors has the once-firing temperature of RB pottery, the once-firing temperature of CRB pottery and secondary heat treatment temperature.When once-firing temperature and secondary heat treatment temperature were 800～1000 ℃, the RB pottery was or/and porous performance the best of CRB ceramic mouldings.
Adopt the RB pottery in the present invention or/and during the CRB ceramic powders, be advisable as carrier with adhesive-bonded fabric or felt, in addition except this RB pottery or/and the CRB ceramic powders also can add activated carbon powder commonly used.
The RB pottery is or/and the CRB ceramic powders: the weight ratio of activated carbon powder commonly used is with 50～90: 50～10 are advisable.
The RB pottery is or/and the hardness of CRB ceramic powders is bigger, and its surface irregularity is easy to exist with pulverulence, also is not easy by fluid removal.
Adhesive-bonded fabric or felt can be carbon fibers, also can be that one of them part is the material of carbon fiber.For example coconut skin activated carbon equigranular activated carbon, pitch class, phenolic, polypropylene nitrile or cellulose isoreactivity carbon fiber or the like.
Adhesive-bonded fabric can adopt natural materials such as synthetic polymers such as inorganic material such as glass fibre or asbestos or polyester, polyamide or cellulose, fiber crops, cotton, wherein anyly all is applicable to the present invention.
Among the present invention with adhesive-bonded fabric or felt as the RB pottery of carrier or/and the air cleaning filter of CRB ceramic powders can be used as dust cover equally and use.
Embodiments of the present invention gather as follows.
(1) a kind of air cleaning filter, it is characterized in that this air cleaning filter with the RB pottery or/and CRB pottery as adsorbing and filter medium, this RB pottery is or/and the pore diameter of CRB pottery is 10～2000 dusts, pore volume is 0.1～1.1cm 3/ g.
(2), it is characterized in that by this RB pottery or/and the filter that the CRB pottery is made is lamellar according to 1 described air cleaning filter.
(3), it is characterized in that by stacked the forming of a plurality of lamellar filters according to 2 described air cleaning filters.
(4), it is characterized in that by this RB pottery or/and the filter that the CRB pottery is made is cylindric according to 1 described air cleaning filter.
(5), it is characterized in that stacked the forming of thin cylinder-shaped filter by a plurality of different-diameters according to 4 described air cleaning filters.
(6), it is characterized in that by this RB pottery or/and the filter that the CRB pottery is made is the filled circles tubular according to 1 described air cleaning filter.
(7) a kind of air cleaning filter, it is characterized in that carrying the RB pottery or/and the CRB ceramic powders as carrier with adhesive-bonded fabric or felt, this RB pottery is or/and the average grain diameter of CRB ceramic powders is 0.1～500 μ m, and pore diameter is that 10～2000 dusts, pore volume are 0.1～1.1cm 3/ g.
(8), it is characterized in that on adhesive-bonded fabric or the felt carrier except the RB pottery or/and the CRB ceramic powders, also carry activated carbon powder commonly used according to 7 described air cleaning filters.
(9), it is characterized in that the RB pottery or/and the weight ratio of CRB ceramic powders and activated carbon powder is 50～90: 50～10. according to 8 described air cleaning filters
(10), it is characterized in that this adhesive-bonded fabric or felt are by the activated carbon fiber of choosing in pitch class, phenolic, polypropylene nitrile, the cellulose according to 7 described air cleaning filters.
(11) a kind of dust cover is characterized in that with adhesive-bonded fabric or felt as carrier, carrying average grain diameter is 0.1～500 μ m, and pore diameter is that 10～2000 dusts, pore volume are 0.1～1.1cm 3The RB pottery of/g is or/and the CRB ceramic powders.
According to embodiment, the present invention is further specified below.
Embodiment 1 (preparation of CRB ceramic forerunner)
Get 25 kilograms of 75 kilograms of defatted rice brans preparing by rice bran and liquid phenolic resins (bakelite), mixing in the following heating edge of 50～60 ℃ of conditions, obtain having plastic uniform homogeneous blend.Mixture is put into the rotation kiln, carry out 60 minutes once-firing under nitrogen atmosphere, firing temperature is 900 ℃.Burn till product with 300 purpose sieves screening carbonization, obtain the carbonized powder that particle diameter is 50～80 μ m.
It is mixing 100～150 ℃ of following heating edge to get 25 kilograms of 75 kilograms of these carbonized powders and solid phenolic resins (bakelite), obtains having the plastic of plastic uniform homogeneous blend-CRB ceramic forerunner.(moulding of air cleaning filter)
As shown in Figure 2, make and wide 25cm, tabular 1 mould that is complementary of long 50cm, thick 0.5cm injects the plastic CRB ceramic forerunner of tool wherein, extrusion forming under 22Mpa pressure, and this moment, the temperature of mould was 150 ℃.
From mould, take out the extrusion forming body, under nitrogen atmosphere, divided for three steps processed.At first be warming up to 500 ℃, kept 60 minutes at 500 ℃ then, carry out heat treatment in 120 minutes at 1000 ℃ again with 1 ℃/minute speed.
Subsequently, 2～3 ℃/minute cooling velocity is cooled to 500 ℃, carries out the nature cooling then and can obtain CRB ceramic mouldings 1 shown in Figure 2.(characteristic of air cleaning filter)
The pore average diameter of CRB ceramic mouldings 1 is that the volume of 300 dusts, pore is 0.68cm 3/ g.
Embodiment 2 (preparation of CRB ceramic forerunner)
It is mixing in the following heating edge of 50～60 ℃ of conditions with 25 kilograms liquid in phenolic resins (bakelite) to get 75 kilograms of the defatted rice brans of being prepared by rice bran, obtains having plastic uniform homogeneous blend.
Mixture is put into the rotation kiln, carry out 60 minutes once-firing under nitrogen atmosphere, firing temperature is 900 ℃.Product is burnt till in carbonization screen, obtain the carbonized powder that particle diameter is 50～120 μ m with 200 purpose sieves.
It is mixing 100～150 ℃ of following heating edge to get 25 kilograms of 75 kilograms of these carbonized powders and solid phenolic resins (bakelite), obtains having the plastic of plastic uniform homogeneous blend-CRB ceramic forerunner.(moulding of air cleaning filter)
As shown in Figure 2, make and wide 25cm, tabular 2 of long 50cm, thick 0.25cm be complementary mould, the plastic CRB ceramic forerunner of tool is injected wherein, extrusion forming under 22Mpa pressure, this moment, the temperature of mould was 150 ℃.
From mould, take out the extrusion forming body, under nitrogen atmosphere, divided for three steps processed.At first be warming up to 500 ℃, kept 60 minutes at 500 ℃ then, carry out heat treatment in 150 minutes at 1000 ℃ again with 1 ℃/minute speed.
Subsequently, 2～3 ℃/minute cooling velocity is cooled to 500 ℃, carries out the nature cooling then and can obtain CRB ceramic mouldings 2 shown in Figure 2.(characteristic of air cleaning filter)
The pore average diameter of CRB ceramic mouldings 2 is that the volume of 480 dusts, pore is 0.62cm 3/ g.
Formed body 1 and formed body 2 can be used in combination among Fig. 2.
Embodiment 3 (preparation of RB ceramic forerunner)
It is mixing in the following heating edge of 50～60 ℃ of conditions with 25 kilograms liquid in phenolic resins (bakelite) to get 75 kilograms of the defatted rice brans of being prepared by rice bran, obtains having plastic uniform homogeneous blend-RB ceramic forerunner.(moulding of air cleaning filter)
Make and wide 25cm, tabular 2 moulds that are complementary of long 50cm, thick 0.3cm inject the plastic RB ceramic forerunner of tool wherein, extrusion forming under 22Mpa pressure, and this moment, the temperature of mould was 150 ℃.
From mould, take out the extrusion forming body, under nitrogen atmosphere, divided for three steps processed.At first be warming up to 500 ℃, carry out heat treatment in 120 minutes at 800 ℃ then with 1 ℃/minute speed.
Subsequently, 2～3 ℃/minute cooling velocity is cooled to 500 ℃, carries out the nature cooling then.(characteristic of air cleaning filter)
The size of CRB ceramic mouldings 2 is dwindled to some extent, and the pore average diameter is that the volume of 400 dusts, pore is 0.50cm 3/ g.
Overlapping two these tabular filters 2 can be combined into an air cleaning filter.
Embodiment 4 (preparation of CRB ceramic forerunner)
It is mixing in the following heating edge of 50～60 ℃ of conditions with 25 kilograms liquid in phenolic resins (bakelite) to get 75 kilograms of the defatted rice brans of being prepared by rice bran, obtains having plastic uniform homogeneous blend.Mixture is put into the rotation kiln, carry out 60 minutes once-firing under nitrogen atmosphere, firing temperature is 900 ℃.Product is burnt till in carbonization screen, obtain the carbonized powder that particle diameter is 50～250 μ m with 100 purpose sieves.
It is mixing 100～150 ℃ of following heating edge to get 25 kilograms of 75 kilograms of these carbonized powders and solid phenolic resins (bakelite), obtains having the plastic of plastic uniform homogeneous blend-CRB ceramic forerunner.(moulding of air cleaning filter)
As shown in Figure 3, make with external diameter be 15cm, internal diameter is 14.5cm, length is the mould that the cylinder 3 of 30cm is complementary, the plastic CRB ceramic forerunner of tool is injected wherein, extrusion forming under 22Mpa pressure, this moment, the temperature of mould was 150 ℃.
From mould, take out the extrusion forming body, under nitrogen atmosphere, divided for three steps processed.At first be warming up to 500 ℃, kept 60 minutes at 500 ℃ then, carry out heat treatment in 120 minutes at 950 ℃ again with 1 ℃/minute speed.
Subsequently, 2～3 ℃/minute cooling velocity is cooled to 500 ℃, carries out the nature cooling then and can obtain CRB ceramic mouldings 1 shown in Figure 1.(characteristic of air cleaning filter)
The pore average diameter of CRB ceramic mouldings 3 is that the volume of 450 dusts, pore is 0.49cm 3/ g.
Embodiment 5 (preparation of CRB pottery)
It is mixing in the following heating edge of 50～60 ℃ of conditions with 25 kilograms liquid in phenolic resins (bakelite) to get 75 kilograms of the defatted rice brans of being prepared by rice bran, obtains having plastic uniform homogeneous blend.Mixture is put into the rotation kiln, carry out 60 minutes once-firing under nitrogen atmosphere, firing temperature is 900 ℃.Product is burnt till in carbonization screen, obtain the carbonized powder that particle diameter is 50～250 μ m with 100 purpose sieves.
It is mixing 100～150 ℃ of following heating edge to get 25 kilograms of 75 kilograms of these carbonized powders and solid phenolic resins (bakelite), obtains having plastic uniform homogeneous blend.(preparation of powder)
To have the extrusion forming under 20Mpa pressure of plastic uniform homogeneous blend, to become diameter be the spheroid of 3cm, and this moment, the temperature of mould was 150 ℃.
From mould, take out the extrusion forming body, under nitrogen atmosphere, divided for three steps processed.At first be warming up to 500 ℃, kept 60 minutes at 500 ℃ then, carry out 120 minutes sintering processes at 900 ℃ again with 1 ℃/minute speed.
Subsequently, 2～3 ℃/minute cooling velocity is cooled to 500 ℃, carries out the nature cooling then.
Pulverizing diameter with pulverizer is the spheroid of 3cm, and then further pulverizes with ball mill and can obtain the CRB ceramic particle that average grain diameter is 1～3 μ m.(moulding of air cleaning filter)
With average grain diameter is the CRB ceramic particle of 1 μ m, with 500g/m 2Density be layed in pitch class activated carbon fiber felt (FN-300GF10: Osaka aerochemistry Co., Ltd. system).(characteristic of air cleaning filter)
Average grain diameter is that the pore volume of the CRB ceramic particle of 1 μ m is 0.87cm 3/ g.
Air cleaning filter of the present invention can manufacture various shape, and keep original performance because of adopting RB pottery and CRB pottery.Confirmed that in addition RB pottery and CRB ceramic powders also have the character that is suitable for air cleaning filter.

Claims (11)

1. air cleaning filter, it is characterized in that this air cleaning filter with the RB pottery or/and the CRB pottery as adsorbing and filter medium, this RB pottery is or/and the pore diameter of CRB pottery is 10～2000 dusts, pore volume is 0.1～1.1cm 3/ g.
2. air cleaning filter according to claim 1 is characterized in that by this RB pottery or/and the filter that the CRB pottery is made is lamellar.
3. air cleaning filter according to claim 2 is characterized in that by stacked the forming of a plurality of lamellar filters.
4. air cleaning filter according to claim 1 is characterized in that by this RB pottery or/and the filter that the CRB pottery is made is cylindric.
5. air cleaning filter according to claim 4 is characterized in that stacked the forming of thin cylinder-shaped filter by a plurality of different-diameters.
6. air cleaning filter according to claim 1 is characterized in that by this RB pottery or/and the filter that the CRB pottery is made is the filled circles tubular.
7. air cleaning filter, it is characterized in that carrying the RB pottery or/and the CRB ceramic powders as carrier with adhesive-bonded fabric or felt, this RB pottery is or/and the average grain diameter of CRB ceramic powders is 0.1～500 μ m, and pore diameter is that 10～2000 dusts, pore volume are 0.1～1.1cm 3/ g.
8. air cleaning filter according to claim 7 is characterized in that on adhesive-bonded fabric or the felt carrier except the RB pottery or/and the CRB ceramic powders, also carry activated carbon powder commonly used.
9. air cleaning filter according to claim 8 is characterized in that the RB pottery or/and the weight ratio of CRB ceramic powders and activated carbon powder is 50～90: 50～10.
10. air cleaning filter according to claim 7 is characterized in that this adhesive-bonded fabric or felt are by the activated carbon fiber of choosing in pitch class, phenolic, polypropylene nitrile, the cellulose.
11. a dust cover is characterized in that with adhesive-bonded fabric or felt as carrier, carrying average grain diameter is 0.1～500 μ m, pore diameter is 10～2000 dusts, and pore volume is 0.1～1.1cm 3The RB pottery of/g is or/and the CRB ceramic powders.
CN02121914.1A 2001-05-25 2002-05-27 Air filters for purification Pending CN1390620A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP157551/2001 2001-05-25
JP2001157551A JP2002346322A (en) 2001-05-25 2001-05-25 Air cleaning filter

Publications (1)

Publication Number Publication Date
CN1390620A true CN1390620A (en) 2003-01-15

Family

ID=19001396

Family Applications (1)

Application Number Title Priority Date Filing Date
CN02121914.1A Pending CN1390620A (en) 2001-05-25 2002-05-27 Air filters for purification

Country Status (4)

Country Link
US (1) US6746519B2 (en)
JP (1) JP2002346322A (en)
CN (1) CN1390620A (en)
AU (1) AU783262B2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7140778B2 (en) 2002-03-01 2006-11-28 Minebea Co., Ltd. Synthetic resin composites and bearings formed therefrom and method
JP4116333B2 (en) 2002-06-05 2008-07-09 ミネベア株式会社 Super finishing whetstone
JP2004019368A (en) 2002-06-19 2004-01-22 Minebea Co Ltd Road paving material
JP2004211851A (en) * 2003-01-07 2004-07-29 Minebea Co Ltd Dynamic pressure bearing device forming oil repellent film thereto and spindle motor for hard disk drive mounting the same
US20040258334A1 (en) * 2003-02-28 2004-12-23 Minebea Co., Ltd. Underwater sleeve bearing and application thereof
US7008196B2 (en) 2003-03-11 2006-03-07 Minebea Co. Ltd. Electrically motorized pump having a submersible sleeve bearing
CN107349743A (en) * 2017-08-30 2017-11-17 河南豫光锌业有限公司 A kind of metallurgical tail gas purifier and its method
CN107935573A (en) * 2017-11-28 2018-04-20 芜湖上水源环保科技有限公司 A kind of microbiological free air purifying filter element preparation method of low cost
CN114053812B (en) * 2021-11-02 2022-08-09 西安交通大学 High-temperature dust-containing gas dust removal, desulfurization and denitrification integrated device and method

Also Published As

Publication number Publication date
AU783262B2 (en) 2005-10-06
AU4438102A (en) 2002-11-28
US20020174771A1 (en) 2002-11-28
JP2002346322A (en) 2002-12-03
US6746519B2 (en) 2004-06-08

Similar Documents

Publication Publication Date Title
US6258300B1 (en) Activated carbon fiber composite material and method of making
CN1139622C (en) Porous composite product particularly with high specific surface area, method for preparing and electrode for electrochemical assembly formed with porous composite film
US5972253A (en) Preparation of monolithic carbon fiber composite material
CN1390620A (en) Air filters for purification
CN1390621A (en) Water filters
CN1424287A (en) Stitched fibre preformed element preparing method for manufacturing composite material element
CN110228120B (en) Preparation method of artificial turf filling material and artificial turf filling material
CN1247523A (en) Carbon-carbon composite material made from densified carbon foam
CN1876724A (en) Agricultural stalk base wood and plastic composite material and combination processing method
CN106631079B (en) Carbon nanotube composite material of silicon carbide and preparation method thereof
CN105920920A (en) Novel filter-net producing technology based on graphene material
CN1940117A (en) Method for mixing powdered metal and nanocarbon material, and method for manufacturing nanocarbon/metal composite material
KR101777676B1 (en) Adsorption carrier using coal tar pitch and water glass, and method of manufacturing there of
KR100843576B1 (en) Activated carbon filter shape body for water purifier
JP3003935B2 (en) Molded heat insulating material and its manufacturing method
EP3279175B1 (en) Vibration assisted densification of a fiber preform
CN106417279A (en) Dopamine silkworm sand composite carbon material and preparation method and application thereof
KR101888829B1 (en) Adsorption carrier using silica fume and calcium hydroxide, and method of manufacturing there of
JP3580644B2 (en) Method for producing solid activated carbon and electric double layer capacitor obtained thereby
JP3233922B2 (en) Method for producing honeycomb-shaped activated carbon
JPS63286469A (en) Composition for molding carbon fiber composite resin
JP3559408B2 (en) SOLID ACTIVE CARBON, PROCESS FOR PRODUCING THE SAME, AND ELECTRIC DOUBLE LAYER CAPACITOR USING THE SAME
JPS6059171B2 (en) Method for manufacturing carbon products with dense and dense structure
KR101678283B1 (en) Filter molded with bio-ceramic activated at high temperature and method thereof
CN102784619A (en) Diatom carbon

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication